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`pip install --unstable-feature=resolver` fails with "ResolutionTooDeep: 100"

See original GitHub issue

Environment

pip version: 20.1
Python version: 2.7.17
OS: MacOS 10.15.4

Description I have a project with a very long list of dependencies, and the experimental resolver fails with the ResolutionTooDeep exception.

Expected behavior It should be able to handle my long list of dependencies (pip freeze | wc counts 223 packagess installed).

How to Reproduce

pip install --unstable-feature=resolver -r requirements.txt

Where requirements.txt contains a lot of dependencies.

Output

[...]
ERROR: Exception:
Traceback (most recent call last):
  File "/Users/youtux/paylogic/paylogic/env/lib/python2.7/site-packages/pip/_internal/cli/base_command.py", line 188, in _main
    status = self.run(options, args)
  File "/Users/youtux/paylogic/paylogic/env/lib/python2.7/site-packages/pip/_internal/cli/req_command.py", line 185, in wrapper
    return func(self, options, args)
  File "/Users/youtux/paylogic/paylogic/env/lib/python2.7/site-packages/pip/_internal/commands/install.py", line 333, in run
    reqs, check_supported_wheels=not options.target_dir
  File "/Users/youtux/paylogic/paylogic/env/lib/python2.7/site-packages/pip/_internal/resolution/resolvelib/resolver.py", line 80, in resolve
    self._result = resolver.resolve(requirements)
  File "/Users/youtux/paylogic/paylogic/env/lib/python2.7/site-packages/pip/_vendor/resolvelib/resolvers.py", line 413, in resolve
    state = resolution.resolve(requirements, max_rounds=max_rounds)
  File "/Users/youtux/paylogic/paylogic/env/lib/python2.7/site-packages/pip/_vendor/resolvelib/resolvers.py", line 323, in resolve
    raise ResolutionTooDeep(max_rounds)
ResolutionTooDeep: 100

Issue Analytics

State:
Created 3 years ago
Reactions:1
Comments:17 (11 by maintainers)

Top GitHub Comments

1reaction

youtuxcommented, Jun 3, 2020

I tested again with the master branch of pip, and indeed I don’t get the error anymore. The new resolver found some incompatible dependencies that were there for quite some time in a project, which is great! Not even pip check could spot that problem.

@ei8fdb I was following this issue for quite some time, that’s where I saw that the new feature was available.

I am up for the interview!

1reaction

timmc-edxcommented, May 27, 2020

I retested with pip 20.2b1 and this is fixed for edx-platform. 🎉

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